29.D
30.C
31.B
【解析】
试题分析：本文主要说了一个学生自己在看了关于 3-D 打印机的杂志和课本等资料后，为自
己打印了 3-D 牙箍。
27.C细节推理题。根据文中But the student did get information from journal articles and textbook可知答案，故选C。
28.A细节推理题。根据文中Dudley didn’t have the money to get braces(牙箍). So, he decided to
3-D print his own and marked down the DIY project in a recent blog post.可知答案。故选A。
29.D细节理解题。根据文中So he decided to hit up his school’s 3-D printing equipment and scanned and printed models of his teeth可知答案。故选D。
30.C推理判断题。根据文中第四段可知，So he decided to hit up his school’s 3-D printing equipment and scanned and printed models of his teeth. He then made non-harmful plastic molds (模子) around them to make 12 sets of braces.可知答案，故选C。
31.B主旨大意题。本文主要说了一个学生自己在看了关于3-D 打印机的杂志和课本等资料后，为自己打印了 3-D 牙箍。根据题意。故选B。
考点：考查人物类短文阅读。
四、单词拼写
32.根据句意，用括号中所给词的正确形式填空，每空填一词。
1. It is October the _________ (nine). It’s my mother’s birthday.
2. Congratulations! Both of you are the_________ (win) of the match.
3. Computers and printers are now (wide) used in many companies.
4. My aunt . (teach) me to play the violin when I was a child.
5. She was so_________ (care) that she wore dif-ferent socks on her feet.
【答案】
【小题1】ninth
【小题2】winners
【小题3】widely
【小题4】taught
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